Why does tab complete not work for user written functions that except filenames?

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Jason Nicholson
Jason Nicholson 2013-8-14
Why does tab complete not work for user written functions that except filenames?
function testFunction(file)
disp(file)
end %end function
Call the above function with a file. While entering the file name, try to tab complete it. It won't work. Why not?

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Walter Roberson
Walter Roberson 2013-8-14
编辑：Walter Roberson 2013-8-14
The rules for tab completion are not well defined, and do not always make sense.
Tab completion for a quoted string takes place if:
  • the quoted string is the first expression (possibly after whitespace) after the beginning of the line, or after a comma (",") or semi-colon (";") that marks the end of anything previous on the line
  • the quoted string immediately follows (no whitespace) a non-quoted underscore ('_') or period ('.')
  • the quoted string immediately follows (no whitespace) a latin letter or latin digit
In addition, there are circumstances under which a quoted string that follows an exclamation mark ('!') may lead to a flawed tab completion, in which the resulting word is missing one or more characters from the file name.
None of the above situations match attempting to enter a valid quoted string as the argument to a function. :(

更多回答（1 个）

David Sanchez
David Sanchez 2013-8-14
The user defined function has to be saved on the current directory or its path set on matlab paths. Matlab will not autocomplete a function name of a function located in a directory different to the working directory.
  1 个评论
Jason Nicholson
Jason Nicholson 2013-8-14
I appreciate your answer but it is not correct. The function is definitely on my path and so is the file. I have folder called UserDefinedFunctions where I store my often used scripts. You can see it the 3rd line of my path shown below. The files are most often in my current working folder.
>> path
MATLABPATH
C:\Users\jnicholson\Documents\MATLAB\UserDefinedFunctions\measuretool_1.13 C:\Users\jnicholson\Documents\MATLAB\CoDaTo C:\Users\jnicholson\Documents\MATLAB\UserDefinedFunctions C:\MathWorks\MATLAB\R2010b\toolbox\matlab\general C:\MathWorks\MATLAB\R2010b\toolbox\matlab\ops C:\MathWorks\MATLAB\R2010b\toolbox\matlab\lang C:\MathWorks\MATLAB\R2010b\toolbox\matlab\elmat C:\MathWorks\MATLAB\R2010b\toolbox\matlab\randfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\elfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\specfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\matfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\datafun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\polyfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\funfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\sparfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\scribe C:\MathWorks\MATLAB\R2010b\toolbox\matlab\graph2d C:\MathWorks\MATLAB\R2010b\toolbox\matlab\graph3d C:\MathWorks\MATLAB\R2010b\toolbox\matlab\specgraph C:\MathWorks\MATLAB\R2010b\toolbox\matlab\graphics C:\MathWorks\MATLAB\R2010b\toolbox\matlab\uitools C:\MathWorks\MATLAB\R2010b\toolbox\matlab\strfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\imagesci C:\MathWorks\MATLAB\R2010b\toolbox\matlab\iofun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\audiovideo C:\MathWorks\MATLAB\R2010b\toolbox\matlab\timefun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\datatypes C:\MathWorks\MATLAB\R2010b\toolbox\matlab\verctrl C:\MathWorks\MATLAB\R2010b\toolbox\matlab\codetools C:\MathWorks\MATLAB\R2010b\toolbox\matlab\helptools C:\MathWorks\MATLAB\R2010b\toolbox\matlab\winfun C:\MathWorks\MATLAB\R2010b\toolbox\matlab\winfun\net C:\MathWorks\MATLAB\R2010b\toolbox\matlab\demos C:\MathWorks\MATLAB\R2010b\toolbox\matlab\timeseries C:\MathWorks\MATLAB\R2010b\toolbox\matlab\hds C:\MathWorks\MATLAB\R2010b\toolbox\matlab\guide C:\MathWorks\MATLAB\R2010b\toolbox\matlab\plottools C:\MathWorks\MATLAB\R2010b\toolbox\local C:\MathWorks\MATLAB\R2010b\toolbox\matlab\datamanager C:\MathWorks\MATLAB\R2010b\toolbox\shared\simulink C:\MathWorks\MATLAB\R2010b\toolbox\shared\instrument C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simulink C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simulink\slresolve C:\MathWorks\MATLAB\R2010b\toolbox\simulink\blocks C:\MathWorks\MATLAB\R2010b\toolbox\simulink\components C:\MathWorks\MATLAB\R2010b\toolbox\simulink\fixedandfloat C:\MathWorks\MATLAB\R2010b\toolbox\simulink\fixedandfloat\fxpdemos C:\MathWorks\MATLAB\R2010b\toolbox\simulink\fixedandfloat\obsolete C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos\aerospace C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos\automotive C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos\industrial C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos\simfeatures C:\MathWorks\MATLAB\R2010b\toolbox\simulink\simdemos\simgeneral C:\MathWorks\MATLAB\R2010b\toolbox\simulink\dee 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C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\asap2\asap2\user C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\common\can\blocks C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\common\tgtcommon C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\connectivity C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\pil C:\MathWorks\MATLAB\R2010b\toolbox\rtw\rtw\datadiff\gui C:\MathWorks\MATLAB\R2010b\toolbox\rtw\rtw\datadiff\gui\icons C:\MathWorks\MATLAB\R2010b\toolbox\rtw\rtw\datadiff\api C:\MathWorks\MATLAB\R2010b\toolbox\rtw\rtw\cgv\api C:\MathWorks\MATLAB\R2010b\toolbox\rtw\rtw\misra C:\MathWorks\MATLAB\R2010b\toolbox\shared\asynciolib C:\MathWorks\MATLAB\R2010b\toolbox\rtw\targets\autosar\autosar C:\MathWorks\MATLAB\R2010b\toolbox\shared\cgir_fe C:\MathWorks\MATLAB\R2010b\toolbox\shared\comparisons C:\MathWorks\MATLAB\R2010b\toolbox\compiler C:\MathWorks\MATLAB\R2010b\toolbox\compiler\compilerdemos C:\MathWorks\MATLAB\R2010b\toolbox\control\control C:\MathWorks\MATLAB\R2010b\toolbox\control\ctrlguis C:\MathWorks\MATLAB\R2010b\toolbox\control\ctrlobsolete C:\MathWorks\MATLAB\R2010b\toolbox\control\ctrlutil C:\MathWorks\MATLAB\R2010b\toolbox\control\ctrldemos C:\MathWorks\MATLAB\R2010b\toolbox\shared\slcontrollib C:\MathWorks\MATLAB\R2010b\toolbox\shared\dastudio C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\engine C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\engine\options C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\engine\optim C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\general C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\graphics C:\MathWorks\MATLAB\R2010b\toolbox\shared\controllib\requirements C:\MathWorks\MATLAB\R2010b\toolbox\dspblks\dspblks C:\MathWorks\MATLAB\R2010b\toolbox\dspblks\dspmasks C:\MathWorks\MATLAB\R2010b\toolbox\dspblks\dspmex C:\MathWorks\MATLAB\R2010b\toolbox\dspblks\dspdemos C:\MathWorks\MATLAB\R2010b\toolbox\shared\filterdesignlib 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C:\MathWorks\MATLAB\R2010b\toolbox\sam\studio\hgdialogs C:\MathWorks\MATLAB\R2010b\toolbox\simulink\blocks\sb2sl C:\MathWorks\MATLAB\R2010b\toolbox\shared\eml\eml C:\MathWorks\MATLAB\R2010b\toolbox\signal\signal C:\MathWorks\MATLAB\R2010b\toolbox\signal\sigtools C:\MathWorks\MATLAB\R2010b\toolbox\signal\sptoolgui C:\MathWorks\MATLAB\R2010b\toolbox\signal\sigdemos C:\MathWorks\MATLAB\R2010b\toolbox\sl3d\sl3d C:\MathWorks\MATLAB\R2010b\toolbox\sl3d\sl3ddemos C:\MathWorks\MATLAB\R2010b\toolbox\slcontrol\slcontrol C:\MathWorks\MATLAB\R2010b\toolbox\slcontrol\slctrlguis C:\MathWorks\MATLAB\R2010b\toolbox\slcontrol\slctrlutil C:\MathWorks\MATLAB\R2010b\toolbox\slcontrol\slctrldemos C:\MathWorks\MATLAB\R2010b\toolbox\slcontrol\slctrlobsolete C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldo C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldodemos C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldodemos\optim C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldodemos\estim C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldodemos\estim\docexamples\adaptive C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sldodemos\estim\docexamples\lookuptable C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sloptim\sloptim C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sloptim\sloptguis C:\MathWorks\MATLAB\R2010b\toolbox\sldo\sloptim\sloptobsolete C:\MathWorks\MATLAB\R2010b\toolbox\sldo\slestim\slestguis C:\MathWorks\MATLAB\R2010b\toolbox\sldo\slestim\slestim C:\MathWorks\MATLAB\R2010b\toolbox\sldo\slestim\slestmex C:\MathWorks\MATLAB\R2010b\toolbox\sldo\slestim\slestutil C:\MathWorks\MATLAB\R2010b\toolbox\shared\sldv C:\MathWorks\MATLAB\R2010b\toolbox\shared\slvnv C:\MathWorks\MATLAB\R2010b\toolbox\symbolic\symbolic C:\MathWorks\MATLAB\R2010b\toolbox\symbolic\symbolicdemos C:\MathWorks\MATLAB\R2010b\toolbox\shared\testmeaslib\general C:\MathWorks\MATLAB\R2010b\toolbox\shared\testmeaslib\graphics

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